Stay-bolt structure



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STAY `BOLT STRUCTURE.

APPLlc/mou mib lm zo, 1920. n 1,403,744, Patented Jan. 17, 1922.

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1 y NVE/V701? www flomeys E. I. DODDS. STAY BOLT STRUCTURE.

APPLICATION FILED JAN. 20. 1920- 1,403,744.

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Patented Jan. 17, 1922.

E. I. DODDS. STAY BOLT STRUCTURE.

i APPLICATIONWHLED JAN. 20, |920. 1,403,744. Y

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gvz/E'NTOR 7mm* Ms Patented Jan. 17, 1922.

' l APPLlcAnoN man 1AN.2o. 1920.

E. I. DODDS. STAY BOLT STRUCTURE.

Patented Jah. 17, 1922.

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NVENTOR 5T/,VM

rm', KA Alfnmeys lJNlTED STATES PATENTA OFFICE.

ETHAN I. IDODDS, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO FLANNERY BOLTCOMPANY, OF PITTSBURGH, PENNSYLVANIA.

STAY-BOLT STRUCTURE.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application tiled January 20, 1920. Serial No. 352,691.

T 0 @ZZ/107mm #may concern:

Be it known that I, E'rrinn' I. Donne, a citizen of the United States,and a resident of littsburgh, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvement-s inStay-Bolt Structures; and I do hereby declare the following t0 be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it apport-airis to malte and use thesame.

This invention relates to improvements in staybolt structures forboilers and particuarly to means for mounting the head of the sta-yboltin the outer boiler sheet,-one object of the invention being to providea simple and efficient structure comprising two inembers removablyconnected together` which may have an adjustable mounting relatively tothe boiler sheet and be welded to the latter when adjusted, and whichshall be capable of being so connected with the outer boiler sheet thatits outer end may be substantially flush with trie outer face of saidsheet or of being so mounted as to project beyond the outer face of Jtheboiler sheet.

A further object is to provide a two-part structure comprising a bearingmember and closure which shall be so connected and associated thateither or both may be seated in the opening in the boiler sheet.

1With these and other objects in view, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claims.

in the accompanying drawings; Figure l is a sectional view, partly inelevation, showing an embodiment of my invention; Figure 2 is a viewshowing` another manner in which the devices may be mounted in theopening in the boiler sheet; Figures 3 and 4 are views showing differentways of mounting a modified structure, and Figures to 18 are viewsshowing various modifications.

1 represents a boiler sheet having an opening the major portion of thewail of which may be straight and substantially cylindrical, but thewall of the opening in the boiler sheet is rounded near its inner end,near the inner face of the boiler sheet, to form a rounded seat 3 for abearing structure (as hereinafter described) in which the rounded head4: atthe outer end of a staybolt 5 is mounted,-the inner end of thestaybolt being secured to the inner boiler sheet 6 in any suitablemanner.

The bearing structure above referred to, comprises a bearing ring?haring an internal rounded seat 8 for the rounded head of the staybolt,and a hollow member 9 approximately senii-elliptical incross-section,the latter being threaded interiorly, as at 10, to receivethe threaded peripheral portion of the bearing ring. The member 9constitutes a closure over the bolt head and is so formed as to providea clearance space 11. A gasket 12 is located between one end of thebearing ring 7 and a shoulder 12 in the closure member 9.

The closure member 9 is rounded exteriorly, as at 18, and has auniversally movable or adjustable mounting on the rounded seat 8 in theboiler sheet, and said closure member may also be provided with anangular portion 14 to receive a wrench.

By so mounting the bearing structure in the opening in the boiler sheetthat it may be universally movable, it may be readily adjusted to insureaccurate alignment of the staybolt with its point of connection with therespective boiler sheets.

It will be observed that in the embodiment of the invention shown inFigure 1, the bearing structure is so mounted in the opening in theouter boiler sheet that its outer end will be substantially flush withthe outer face of said sheet. That portion of the opening in the boilersheet between the outer portion of the closure member 9 and the straightwall of said opening will form an annular space and within the innerportion of this space, a weld 15 is located (when the bearing structureshall have been properly adjusted), said weld overlying a portion ofsaid closure member and fixedly uniting the same to the wall of theopening in the boiler sheet.

In the embodiment of invention shown in Figure 2, the bearing structureis so mounted in the boiler sheet as to project beyond the outer face ofthe latter. In this instance, the inner portion of the opening 1G intheboiler sheet may have a straight wall, but the other portion of the wallof said opening-is rounded, as at 17, and both the closure member andthe bearing ring have universally movable mountings on said roundedseat, the inner end portion of the ring being made with a rounded face18 for this purpose in the saine are asthat ol the rounded portion l0 ofthe closure niember. lrVhen the bearing structure is thus mounted, itwill be Welded to the outer face of the boiler sheet by a Weld 19 whichsurrounds the closure' member of said structure.

ln the'construction-shown in Figure 3, the

boiler sheet l is provided with a tapering opening 20, the inner lportion of the wall ot Which is slightly curved to provide a. seat 2l`for a-closure member 22 which is so located in the opening in theboiler sheet that its central portion will be substantially flush Withthe outer :tace of the boiler1 sheet. The closure member shown in Figure3 is approximately semi-elliptical in cross section, presenting a curvedor rounded peripheral portion 23 so that the structure may have .auniversally adjustable mounting on the seat afforded by the wall or" theopening in the boiler sheet. The portion Q3 of the closure member isthreaded internally for the reception of the bearing ring 24rin whichthe head of the staybolt is mounted, and said bearingring is .formedwith a shoulder 25 to receive the edge of the closurermember. The tace26 of the bearing ring is rounded in the same arc as that of the portion23 of the closure member. `At Weld 27 Within the opening in the boilersheet unites the structure to the latter.

The bearing structure shown in Figure Llis the same as that shown inFigure 3, but in Figure 4; the Wall of the opening in the boiler sheetis made to form a rounded seat 28, and the bearing structure is somounted von this seat that both members 22 and 24 engage the same andare thus mounted so as to be universally adjustable. In Figure 4 theclosure member 9.2 is united to the outer face of the boiler sheet by aWeld 29.

In the construction shown in Figure 5,

.the bearing ring only has a universally movable mounting in the openingin the boiler sheet and the closure member 30 is made conical andbeveled at 3l, both of said members being united to the boiler sheet bya Weld 32. By making the closure member'eonical, it may be mounted inaconical opening in the boiler sheet when a flush mounting is desired,and Welded to the sheet at the beveled portion 31.

`In the embodiment of my invention shown in Figures 6 to l1, lrepresents an out-er boiler sheet and '2a an inner boiler sheet, withwhich latter, the inner end oit a staybolt 3- is connected in anysuitable manner and said bolt is )rovided at its -outer end With a head4a which may be connected with .the outer boiler sheet as hereinafterdescribed.

In Figure 6, thel outer boiler sheet l is provided -with an opening 5, aportion ot which may be cylindrical and has a diame- Y ter appreciablygreater than that of the Y staybolt which passes through it, and aportion of said opening is enlarged and rounded to form a rounded seat6a.

' 7 represents a bearing sleeve or member, the inner' lend portion otwhich may be rounded to provide a rounded exterior portion 7b which mayhave a universally movable or adjustable mounting on the rounded seat 6ain the boiler sheet, and a rounded interior seat 8a on which the roundedhead of the staybolt has its mounting. The outer Vend portion of thebearing sleeve `is threaded externally as at 9a and receives theinternally threaded flange l0L of a one-piece closure member lla. Agasket 12'v may be disposed between the closure member lla and the outerend of the bearing sleeve 7a.

The peripheral portion of the closure member and its Yflange arerounded, as indicated at 13 and Illa (the rounded portion 1B being, ineit'ect, a beveled edge) and said closure member may be madewitli anangular recess 15L to receivel a Wrench.

When the bearing structure is mounted as shown in Figure 6, (in whichthe bearing sleeve is universally adjustable on its seat in the boilersheet to insure proper alignment oliI the staybolt With its points ofconnection with the respective boiler sheets), a Weld 16asurroun'dingjsaid'sleeve unites the same With the outer face of theboiler sheet. Y

lVhen a Hush mounting is desired, the

structure may be mounted in the boiler sheet as shown in Figure '7.rllhe outer boiler sheet is here shown as provided With an opening 17, aportion of the Wall of which may be made tapering and the inner portionot said Wall may be made slightly curved to form a seat 1S for therounded portion lita of the closure member lli-fthe major portion ot thelatter' being located Vwithin the opening in the boiler sheet With itsyouter end substantially flushY With the outer tace ot said sheet. Thusit will be seen that in Figure 7, the closure member llL has auniversally adjustable mounting in the opening in the vboiler sheet andthat the strain exerted by the bolt on the Vbearing sleeve is sustainedbythe closure mem ber. Y

The rounded portion Vl5a of the closure member cooperates with thestraight outer portion of the Wall of the opening inthe .boiler sheet toform a groove in which a weld 19a is located and serves 'to iizredlyunite the closure member to the boiler sheet, after any necessaryadjustment ot the bearing structure shall have been effected.

ln the construction sh'oivn in Figure 8, ka bearing sleeve 2Oa isprovided near its upper or outer end with a rounded seat 2l?L for therounded head 4l) o1 the 'stayb'oln' said head' being shown ovoid inshape, and the boiler sheet l 1s made with an opening 22 which may becylindrical throughout its major portiem-the outer end portion of theopening being enlarged and its Wall rounded to :torm a seat 23 for therounded exterior portion of the bearing sleeve. The bore ot' the openingin the bearing sleeve may be made tiaring :from the seat 21 to the innerend ot said sleeve as indicated at 2l?. The closure member 11b shown inFigure S is made with a peripheral portion 25 having a part surrounding`the bearing sleeve and threaded thereto and the outer edge ot' saidperipheral portion may be beveled as shown at 26H'.

T he closure member 11b is formed therein with an angular enlargement Q7to receive a wrench. rThe peripheral portion 25a ot the closure memberis made with a trans versely rounded face 28a.

-When the bearing sleeve is mounted as shown in Figure 8, it will beunited to the boiler sheet (after having been properly adjusted) by aWeld 25), surrounding said sleeve.

The bearing structure shown in Figure 9 is the same as that shown inFigure 8, but in the arrangement shown in Figure 9, the opening in theboiler sheet is so formed as' to present a rounded wall extending nearlythrough the sheet, whereby a rounded seat 30 is formed on which theperipheral portion of the closure member has a universally adjustablemounting, and the outer end of the closure member will lie substantiallyHush with the outer face of the outer boiler sheet. The outer endportion of the opening in the boiler sheet is beveled as at 31a and thisbeveled face forms, with the beveled portion 26 ot the closure member, agroove Which receives a Weld 82a, said Weld fixedly uniting the closuremember to the boiler sheet.

1n the construction shown in Figure 10, the bearing member 33 is madewith a plain rounded outer face and may have a universally adjustablemounting onV the seat formed by the rounded Wall 134C of the opening inthe boiler' sheet. Then thus mounted and properly adjusted the bearingmember will be Welded to the boiler sheet as at 35. The bearing memberis threaded internallyT and receives a threaned annular flange 36projecting from and forming part ot' the closure member 3T, the latterbeing constructed to be mounted in and secured to the boiler sheet inthe same manner as shoivn in Figure 9, ivhere a flush mounting isdesired.

1t Will be observed that the rounded portions of the closure membersWhich on the wall ot the opening in the boiler sheet mark segments ofcircles which are difierent from the segments marked by the roundedexterior portions of the bearing members.

In some positions on the boiler structure. it may be found desirable tosubstitute a small plug closure tor the closure member shown in Figure10. Such a plug closure is shown at 38 Figure 11 screwed into thebearing member ln the embodiment olf the invention as shown in Figure1i, the outer boiler sheet 1 is provided with an opening 5, a portion otwhich is curved transversely o'f the sheet to provided a. rounded seat6" Yfor a bearing structure. The said bearing structure coniprises abearing sleeve or member 7C haif'ing an internal rounded seat 8" for thebolt head and an exterior rounded portion 9 concentric with the roundedseat 6b in the opening in the boiler sheet, and a closure member 10b. Aportion of the bearing sleeve is threaded exteriorly to enter thethreaded interior ot' the closure member, as indicated at 11C, and saidclosure member is rounded exteriorly as at 12b. rFhe rounded portion 12"ot the closure member and the rounded portion 9" ot the bearing sleevemay be curved in the same are, so that when the structure is mounted inthe opening in the boiler sheer, both members T" and 10" may have auniversally adjustable mounting on the rounded seat 6" in the boilersheet. Then the structure shall have been properly adjusted to' insureaccurate alignment ot the staybolt with its points or connection withthe respective boiler sheets, it ivill be Welded steam-tight to theouter boiler sheet by a Weld 13b surrounding the closure niember.

The closure member has an approximately semi-elliptical shape in crosssection, ivith an annular 'flange 14D, the edge portion of which isbeveled as at 15b.

lVhen the mounting is to be employed as a flush structure, the opening`16b in the boiler sheet may have a portion 17h ot its Wall straight anda portion near the inner tace of the sheet, rounded at 18, as shown inFigure 15. The mounting` will be disposed y'in this opening in theboiler sheet so that the rounded portion 12 or" the closure member Willhave a universally adjustable bearing on the seat 18b in the boilersheet, and the tlanged portion ot said closure member disposed Withinthe opening 161 and approximately tlush with the outer face ot the outerboiler sheet. The beveled edge 15b of the tia-nge 14" will now term,with a portion of the wall 17h o the opening 1Gb, a groove in which aWeld 19" is located, said Weld fixedly uniting the llange of the closuremember to the boiler sheet, and sealing the structure steam-tight in theopening in the boiler sheet.

It will be observed that where the flange 14" joins the body ot theclosure member, the metal is comparatively thin. This Will permit of theflange being cut ott with the use of a, chisel or other tool asindicated by dotted lines 2Gb, Figure 15, when it becomes necessary towithdraw the mounting to remove a broken bolt from the boiler.

ln the embodiment et the invention shown in Figure 12, the outer boilersheet is provided with an opening, a portion of the wall of which isrounded to form a seat 5C and another portion of said wall may bestraight as shown at 6, Si cap 7, the outer tace of which may lie Hushwith the outer face of the boiler sheet 17 is provided with an inwardlyprojecting flange SC having a rounded exterior tace 9c to conform to thecurvature of the seat in the boiler sheet so that said cap 7 may beuniversally movable within the opening in the boiler shee The cap 7 maybe rounded or beveled exteriorly adjacent to the `flange Se and thisportion of the cap may be thickened somewhat and provided interiorlywith screw threads 10c. rlhe outer end portion o1 a bearing member 11enters within the laneed portion oi' the cap and is threaded interiorlyfor the reception of a plug 120,-the inner end or which is separatedfrom a shoulder 13c in the bearing member by a gasket 111C and the outerend of said plug extends beyond the outer end or the bearing member andis screwed to the threaded portion 10'3 in the cap 71. A gasket 15c maybe interposed between the outer end 'of the bearing member 11d and thecap 7. The bearing member 11 is provided interiorly with a seat 16C forthe head of the staybolt and the plug 12c is recessed to form aclearance space 1"C over the head of the staybolt.

By mounting the cap 7 Within the opening in the boiler sheet so that itmay be univerally adjustable and supporting the bearing member by saidcap through the medium ofthe plug 12C, the bearing member may beadjusted to insure proper alignment ot the staybolt with its points ofconnection with the respective boiler sheets. Between the rounded orbeveled edge portion or' the cap 7 and the portion 6 et the wall of theopen-- ing in the boiler sheet, a weld 18c is located and unites saidcap to the boiler sheet.

Then the bearing member 11 is mounted in the boiler sheet so as toproject beyond the outer face 01"' the latter, said boiler sheet may beprovided with an opening 19c having a portion of its wall rounded as at20c to receive the rounded portion 21C of said bearing member, as shownin Figure 15. The bearing member will then be united to the boiler sheetby a weld 22C and the cap 7 may be omitted-the plug 12c forming aclosure for the bearing member.

1n the embodiment of the invention shown in Figures 16-18 the outerboiler sheet V1 is provided with an opening 5, an intermediate portionof the wall or" which is rounded to provide 'a seat 6 and the portion otsaid wall near the outer face of the boiler sheet may be beveled aS at7.

ing on the rounded portion 6 of the wall of 'p The under the opening inthe boiler sheet. side or the ring 8 may be made with an annular groove10 and said ring is provided with a tubular or cylindrical portion 11ewhich is externally screw-threaded. bearing member 12 having an interiorthreaded port-ion is screwed onto the tubular portion 11e of the ringand a gasket 13 may be interposed between the inner end of said tubularportion 11e and a shoulder 1d in the bearing member. The outer end ol'the bearing member may be rounded as at 15 and project into the groove10 The bearing member is also rounded exteriorly as at 16(l for apurpose hereinafter explained. The ring is threaded interiorly near itsouter end and receives a plug` closure 17 having an angular portion 18to receive a wrench, and a gasket 19 may be disposed between saidclosure and a shoulder 20 in said ring.

lf'ilhen the structure is mounted as above described will be universallyadjustable to insure proper alignment oil the staybolt with its pointsot connection with respective boilersheets and when properly adjusted itwill be united to the boiler sheet `by a weld 21 which occupies a grooveformed by the beveled portion 7 ot the wall ot the opening in theboiler' sheet and a beveled edge portion Q2 ot the ring.

The bearing member 12 ma)Y be mounted in a boiler sheet 1 as shown inFigure 1i' and a. cap or plug closure 9,3 substituted for the ring S andclosure 171.

ln the construction shown in Figure 18 the outer end of the bearingmember 11e may be flat and this end portion ot the bearing memberldisposed between the wall of the opening in the boiler' sheet and thecylindrical portion 11e of ring Se and'scroived to the same. Y Y' Havingfully described my invention what l claim as new and desire to secure byLet ters-Patent, is Y 1. A mounting i'or a sta,flvoli comprising;r aclosure member and a bearing member re: movably connected with theclosure member; said bearing member havingV a seat for the head ot n,staybolt and said closure member having a transversely curved'exteriorportion to seat on the wall of an opening in a boiler sheet.

2. A mounting' for a staybolt, comprising a closure member and a bearingmember having threaded connection therewith, said members having roundedexterior portions, and said bearing member having afseat for the head ofa staybolt.

3. A mounting for a staybolt, comprising a. hollow closure having anapproximately elliptical cross section7 and a bearing memberhavingthreaded connection with said closure member, said bearing memberhaving a seat for the head of a s taybolt, and both ot said membershaving exterior rounded portions.

4. In a st-aybolt Structure, the e mbination with a boiler Asheet havingan opening, of a bearing structure mounted in said opening, said bearingstructure Comprising a closure member and a bearing,` member havingthreaded connection with said closure member, each of' said membershaving an external configuration whereby the same may be mounted in theogening in the boiler sheet, and a. Staybolt having a head mounted insaid bearing` member.

5. In a staybolt Structure, the combination with a boiler sheet havingan opening, ot a bearing structure comprising a Closure member having aninitially universally adjustable mounting on the Wall of Said openingand a bearing member havingthreaded conneotion with said closure memberand having a seat for a bolt head, a staybolt having a head mounted insaid bearing member, and a Weld uniting said closure member to theboiler sheet.

6. In a staybolt structure, the combination with a boiler sheet havingan opening, a portion of the Wall ot which forms a seat near the innertace ot the boiler sheet, ot a bearing structure comprising a closuremember located in said opening with ite outer tremity substantially iuehwith the outer tace ot the sheet and having a rounded peripheral nortionmounted on the seat formed by the Wall ot the opening in the boilersheet, and a bearing member having threaded conneetion with said closuremember, and a Weld located in the opening in the boiler sheet anduniting said closure member to the boiler sheet.

7. A mounting for a st-aybolt, comprising a bearingmember and a closuremember removably connected together, each t said members having' a.rounded exterior port-ion tor initial mounting in an opening in a boilersheet.

8. ln a staybolt Structure, the combination with a boiler sheet havingan opening, ot a mounting tor a staybolt comprising a bearing member anda closure member removably connected tegether, each ot said membershaving an exterior rounded portion for initial universally movablemounting` in the boiler sheet, a staybolt having a head mounted in saidbearing member and a. Weld uniting said mounting to the boiler sheet.

9. A mounting for a Staybolt, Comprising bearing member having anenteriorly rounded portion and interior seat tor the head of a sta bolt,said bearing` member having an interior threaded portion, and a closurecomprising a cap havinga rounded peripheral'portion and a threaded plugentering` the threaded por ion ot the bearing` member and havingthreaded connection with the cap Within the latter.

l0. In a staybolt structure, the combination with a boiler sheet havingan opening, ot a cap havingan initially universally movable mounting` insaid opening, a bearing member entering said cap and threadedinteriorly, a plug threaded into said bearing member and into said cap,a staybolt having a head mounted in said bearing member, and a welduniting Said cap to the boiler sheet.

in testimony whereof, I have signed this specification.

ETHAN I. DODDS,

